package main.day11;

public class Test {
    public static void main(String[] args) {
        A1<String> a = new A1<String>();
        a.setKey("");

    }
}

class A1<T>{
    private  T key;
    public T getKey() {
        return key;
    }

    public void setKey(T key) {
        this.key = key;
    }
}